STUDY PERFORMANCE REPORT
|
|
- Dominick Jones
- 5 years ago
- Views:
Transcription
1 STUDY PERFORMANCE REPORT State: Michigan Study No.: 480 Project No.: F-80-R-2 Title: Development of Decision Models for the Great Lakes' fisheries Period Covered: October 1, September 30, 2001 Study Objective: Develop decision models for Great Lakes salmonine fisheries that incorporate stocking, harvest, and other management actions as control variables; and predict the likely outcomes such as harvest rates in different locations and other measures of ecosystem performance relevant to achieving a valuable and sustainable fishery. Summary: Statistical catch-age models were refined or updated for some of the major predators in lakes Michigan and Huron. Substantial progress was made in applying similar methods to alewife and bloater in Lake Michigan. The species-specific stock assessment results are being linked together to estimate consumption of forage fish and to model fish community dynamics. The research program also addressed the issue of sea lamprey mortality on lake trout in Lake Huron, the assessment of yellow perch in Lake Michigan, and basic questions about performance of the stock assessment methods. Results were reported extensively through presentations and submission of manuscripts for publication. Job 4. Title: Tropho-dynamic and predator models. Findings: We continued to refine existing predator population models for the main basin of Lake Huron and used these in combination with a gross production approach to estimate predator consumption of forage fish. This work is forming the basis of a Ph.D. dissertation (Norine Dobiesz). The predators we considered were determined through consultation with the Lake Huron Technical Committee and included: three populations of lake trout (north, central, south), two distinct populations of walleye (Saginaw Bay and southern main basin), chinook salmon (entire main basin), and burbot (entire main basin). Details of model structure were described in previous reports. Over the past year, we have largely completed the task of migrating our model to a Visual Basic program from a spreadsheet implementation. We have also updated predator models, with the most extensive updates being for lake trout. More detail on this work is reported in the Study 689 Performance Report. Overall, our results continued to suggest that total consumption may be near the productive capacity of Lake Huron, although there is still great uncertainty. Current estimates of consumption are above estimates of historical consumption by lake trout and are substantial relative to estimates of forage abundance. Model projections, however, continue to indicate that large reductions in stocking would be required to substantially reduce predator demand for prey, due to major contributions of self-sustaining native and naturalized predator populations. Model projections also suggest that successful control of sea lamprey will produce a modest increase in consumption of prey fish by piscivores.
2 On Lake Michigan, the chinook salmon model has been refined to better model changes in maturity and growth. Otherwise, the predator models for that lake were not updated. On Lake Michigan, our focus in the past year was on developing a parameter estimation model to estimate stock-recruitment dynamics of key forage fish species, while accounting for mortality due to predator consumption. This approach treats predator abundances as a forcing function (estimated externally in separate analyses), and parameters are estimated to determine a recruitment time-series and the functional response linking predators to prey. With recruitment and stock sizes of the forage fish then in hand, a stock-recruitment function can be estimated. Because this approach relies on both forage fish survey data and predator abundance estimates, this work is tightly linked to our earlier work on forage fish data and predator stock assessments. This work was implemented in the AD Model Builder environment, and our current model attempts to estimate alewife and bloater recruitment patterns, while treating predators and the abundance of other forage fish as "known". We continued to address two main challenges in this work. First, initially our model (based on the existing SIMPLE model) for bloater assumed constant size-at-age. However, the observed change in size-at-age over time has been substantial. We have addressed changes in bloater size-at-age through a separate estimation model. This model fits observed size-at-age data over time by allowing growth rates to change dynamically. Incremental growth follows a von Bertalanffy model, and the parameters of the model are allowed to change gradually over time. This modeling work is complete and a draft manuscript is in preparation. The second and larger challenge has to do with the observed patterns in alewife age and length compositions. The prevailing view is that predator consumption of alewife has been substantial and the major cause of the observed decline in alewife abundance. However, observed age and length compositions for alewife do not show substantial trends over time. Given the pre-existing estimates of size selection by the predators, the model could not fit the full observed age composition without estimating very low levels of predator-induced mortality and extremely high alewife abundance. This is not a reasonable result. Over the past year we explored whether different assumptions regarding size selection of prey fish might account for the observed patterns. Our results demonstrated that any reasonable assumption regarding size selection cannot reproduce the observed patterns. We are uncertain regarding the cause, but now believe that observed changes in age composition of the survey catch may not be completely reflective of the age composition of the population. One possibility stems from a switch from scale to otolith aging in Other studies have demonstrated that when alewife growth is slow, use of scales can underestimate age. The switch in methodology occurred more or less coincident with a large change in alewife abundance. Hence, changes in methodology and growth might be part of the reason the expected patterns in the full age and size composition are not apparent. Because of potential problems with aging, we now pool ages 3 and above as one group and use only this group and age-0 abundance from the trawl survey when fitting the model. With this modification, fitting the model to the observed data produces overall prey abundance and consumption estimates that make sense in light of direct estimates of prey abundance, and current estimates of predator abundance and consumption rates. This model is still in development. Although overall estimates of predator consumption seem reasonable, the current model showed an unreasonable drop in predator consumption during the 1980s. The modeled level of consumption would not support the growth of chinook salmon that was observed. We suspect this can be resolved by making use of observed growth data to adjust the effective search rate parameter in the functional response. The model also does not fit recent trawl survey indices of age-0 alewife abundance. We are exploring whether this pattern might result from changing catchability of the survey for age-0 alewife that can be adjusted for. 2
3 Job 6. Title: Expand research into other areas. Findings: Research was expanded through funding obtained from other agencies and by partnership with other Projects. Additional support was obtained from the Great Lakes Fishery Commission (GLFC) and Michigan Sea Grant (MSG) to sponsor research on salmonine stock assessment and modeling in the Great Lakes. Sea Grant and GLFC supported graduate students and staff who participated in modeling and data analysis of predator and forage fish in Lake Michigan. Currently a Ph.D. student (Emily Smith) is working in this area. Details on this work are described in other Jobs. Additional MSG funding was obtained to support research on stock assessment modeling methods, and funding was arranged through the GLFC to support specific stock assessment work on yellow perch in Lake Michigan. A new Ph.D. student was recruited and started in the fall of 2000 (Michael Wilberg) to participate on these projects. An initial statistical catch-age model for yellow perch in Lake Michigan is now in development. The student has become familiar with statistical catch-age methods, simulation approaches, and available software. Trial programs have been developed to simulate data and fit statistical catch-age models to them, as a means for evaluating estimator performance. GLFC funding has supported work by a ph student (Mike Rutter) on sea lamprey-lake trout interactions. This research included a new method for summarizing sea lamprey wounding, which is described in a manuscript that has been submitted for publication (see Job 7). Research has continued to integrate these results with data informative on sea lamprey and lake trout abundance. The approach here is to integrate a functional response for sea lamprey into a statistical catch-age model for lake trout. This has been implemented in an AD Model Builder environment and performance of the method is being evaluated. This sea lamprey work was extended to include active participation in the sea lamprey international symposium (Dr. Bence co-chaired a session) sponsored by the GLFC in August 2000 and as a result a number of manuscripts have subsequently been submitted for publication (see Job 7). Tropho-dynamic work described in Job 4 was expanded to make comparisons across the Great Lakes with regard to plankton communities, prey standing stocks, predator standing stocks and consumption rates by predators. As part of this work, a preliminary statistical catch-age model was developed for chinook salmon in Lake Ontario, in Collaboration with the Ontario Ministry of Natural Resources and their partners. These comparisons suggest that consumption of prey fish per unit area is highest in Lake Michigan, but reaches comparable levels in Lake Ontario. Somewhat lower consumption of prey fish occurs in Lake Huron. Much lower prey fish standing stocks and predator consumption of prey fish occurs in Lake Superior, although the top down effect may be large there. Lake Ontario appears to stand out in having much higher standing stocks of alewife. This appears to be a long-standing difference stemming from higher recruitment of alewife in that lake. The smaller average zooplankton size in that lake is consistent with the higher alewife abundance. Similarly, chinook salmon have generally grown faster in Lake Ontario, as might be expected if the dominant prey is more available there. Results from this comparison were presented at a special GLFC workshop, as the second phase of the Salmonid Communities of Oligotrophic Lakes-2 process. Contrast across the Great Lakes in prey fish density and growth of chinook salmon may aid in parameterizing the functional response for this predator. Dr. Bence expanded his impact on stock assessment in the Great Lakes by acting as an external reviewer of statistical catch-age assessments of walleye and yellow perch in Lake Erie during This review process was supported by the GLFC within the Lake Committee structure. 3
4 Job 7. Title: Publish results and prepare annual reports. Findings: This annual report was prepared. Two manuscripts were accepted for publication: Krause, A.E., D.B. Hayes, J.R. Bence, C.P. Madenjian, and R.M. Stedman. In press. Measurement variability in nine Lake Michigan fish species. Journal of Great Lakes Research. Wilberg, M., J.R. Bence, and J.E. Johnson. In press. Survival of juvenile lake trout stocked in western Lake Huron during North American Journal of Fisheries Management. Eight manuscripts were submitted for publication: Madenjian, C.P., G.L. Fahnenstiel, T.H. Johengen, T.F. Nalepa, H.A. Vanderploeg, G.W. Fleischer, P.J. Schneeberger, D.M. Benjamin, E.B. Smith, J.R. Bence, E.S. Rutherford, D.S. Lavis, D.M. Robertson, D.J. Jude, and M.P. Ebener. Submitted. Dynamics of the Lake Michigan food web, Canadian Journal of Fisheries and Aquatic Sciences. Stewart, T., J.R. Bence, R.A. Bergstedt, M.P. Ebener, F. Lupi, and M. Rutter. Submitted. Recommendations for assessing sea lamprey damages: toward optimizing the control program in the Great Lakes. Journal of Great Lakes Research. Ebener, M.P., J.R. Bence, R.A. Bergstedt, and K.M. Mullett. Submitted. Classifying sea lamprey marks on Great Lakes lake trout: observer agreement, evidence on healing times between classes and recommendations for reporting of marking statistics. Journal of Great Lakes Research. Hayes, D.B., B. Thompson, J.R. Bence and T. Kwak. Submitted to editors. Biomass, Density and Yield Estimators. Chapter 8 in M. Brown and C. Guy, editors, Analysis and Interpretation of Freshwater Fisheries Data. American Fisheries Society Special Publication. Haeseker, S., M. Jones and J.R. Bence. Submitted. Estimating uncertainty in the stockrecruit relationship for St. Marys River sea lamprey. Journal of Great Lakes Research. McCleish, D.A., L.C. Mohr, B.A. Henderson, R.L. Eshenroder, M.P. Ebener, T.F. Nalepa, A.P. Woldt, J.E. Johnson, R.L. Argyle, G.L. Curtis, N. Dobiesz, J.R. Bence, and J.C. Markarewicz. Ecology of the Lake Huron Fish Community Submitted. Special report of the Great Lakes Fishery Commission. Rutter, M.A. and J.R. Bence. Submitted. Summarizing sea lamprey wounds on lake trout in Lake Huron: a length based approach. Journal of Great Lakes Research. Bence, J.R, M.A. Rutter, R. Bergstedt, W. Swink, G. Christie, P. Cochran, M. Ebener, J. Koonce. Submitted. Sea Lamprey Parasite-Host Interactions in the Great Lakes. Journal of Great Lakes Research. 4
5 Nine oral platform presentations or poster presentations: Madenjian, C.P., G.L. Fahnenstiel, T.H. Johengen, T.F. Nalepa, H.A. Vanderploeg, G.W. Fleischer, P.J. Schneeberger, D.M. Benjamin, E.B. Smith, J.R. Bence, E.S. Rutherford, D.S. Lavis, D.M. Robertson, D.J. Jude, and M.P. Ebener. Dynamics of the Lake Michigan food web, Ecological Society of America, August Smith, E.B., G. Fleischer, and J.R. Bence. Modeling time-varying growth for bloater in Lake Michigan. American Fisheries Society Meeting, August 21, 2001, Madison, Wisconsin. Madenjian, C.P., D.M. Benjamin, E.B. Smith, J.R. Bence, E.S. Rutherford, and P.J. Schneeberger. Dynamics of salmonine, lake whitefish, burbot, and yellow perch populations in Lake Michigan, International Association for Great Lakes Research, June 10-14, 2001, University of Wisconsin - Green Bay. Abstract published by IAGLR, 2205 Commonwealth Blvd, Ann Arbor, MI Dobiesz, N.E. and J.R. Bence. Prey fish biomass eaten by predators in the main basin of Lake Huron. International Association for Great Lakes Research, June 10-14, 2001, University of Wisconsin - Green Bay. Abstract published by IAGLR, 2205 Commonwealth Blvd, Ann Arbor, MI Schrouder, J.R., J.R. Bence (presenter), and M.P. Ebener. Evaluating Fish Community Objectives for Lake Huron. International Association for Great Lakes Research, June 10-14, 2001, University of Wisconsin - Green Bay. Abstract published by IAGLR, 2205 Commonwealth Blvd, Ann Arbor, MI Woldt, A.P., S.P. Sitar, J.R. Bence, and M.P. Ebener. Status of lake trout in Lake Huron: partitioning mortality using statistical catch at age modeling. International Association for Great Lakes Research, June 10-14, 2001, University of Wisconsin - Green Bay. Abstract published by IAGLR, 2205 Commonwealth Blvd, Ann Arbor, MI Dobiesz, N.E. and J.R. Bence. Consumption by key predators in the Lake Huron main basin. Poster presented at Michigan DNR Fisheries Division In Service meeting, March 1, Dobiesz, N.E. and J.R. Bence. Predator-prey interactions: prey consumption by key predators in Lake Huron. State of Lake Huron Symposium, Upper Lake Meetings, March 22, 2001, Sault Ste. Marie, Canada. Ebener, M.P., J.R. Bence, R. Bergstedt, and K. Mullet. Sea lamprey marking assessment. Common Session, Upper Lake Meetings, March 22, 2001, Sault Ste. Marie, Canada. Prepared by: James Bence Date: September 30,
STUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Project No.: F-81-R-4 Study No.: 451 Title: Evaluation of lake trout stocks in Lake Huron Period Covered: October 1, 1996 to September 30, 2002 Study Objective:
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Project No.: F-80-R-7 Study No.: 230703 Title: Lakewide assessment of the contribution of natural recruitment to the Chinook salmon population of Lake Huron. Period
More informationStatus and Trends of the Lake Superior Fish Community,
Status and Trends of the Lake Superior Fish Community, 1978-2015 An Overview of the USGS Lake Superior Monitoring and Research Program Owen Gorman, Mark Vinson & Daniel Yule Lake Superior Biological Station
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Study No.: 427 Project No.: F-81-R-1 Title: Measurement of sportfishing harvest in lakes Michigan, Huron, Erie, and Superior Period Covered: October 1, 1999 to
More informationFuture of Lake Whitefish and Lake Trout Populations in The Great Lakes
Future of Lake Whitefish and Lake Trout Populations in The Great Lakes Mark P. Ebener Inter-Tribal Fisheries and Assessment Program Chippewa Ottawa Resource Authority Lake Trout (Salvelinus namaycush)
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Project No.: F-81-R-1 Study No.: 436 Title: Vital Statistics of walleye in Saginaw Bay Period Covered: October 1, 1999 to September 30, 2000 Study Objective: To
More informationSTUDY PERFORMANCE REPORT
SUDY PERFORMANCE REPOR State: Michigan Project No.: F-81-R-1 Study No.: 495 itle: Assessment of lake trout populations in Michigan waters of Lake Superior Period Covered: October 1, 1999 to September 3,
More informationHydroacoustic survey of Otsego Lake, 2004
Hydroacoustic survey of Otsego Lake, 2004 Thomas E. Brooking 1 Mark D. Cornwell 2 INTRODUCTION Fishery managers must often rely on uncertain information regarding abundance and distribution of offshore
More informationStrategy for Reducing Lake Trout Stocking in Lake Huron
Strategy for Reducing Lake Trout Stocking in Lake Huron Drafted by the Lake Huron Technical Committee March 18, 2014 Adopted by the Lake Huron Committee March 22, 2016 Executive Summary The Lake Huron
More informationRenseignements supplémentaires. Supplementary Information. Présentation du Ministère des Richesses naturelles de l Ontario
Deep Geologic Repository Joint Commission d examen conjoint du projet de stockage dans des couches géologiques profondes PMD 13-P1.6B File / dossier : 8.01.07 Date: 2013-10-01 Edocs: 4209085 Supplementary
More informationDan O Keefe, Ph.D. Ottawa County Water Quality Forum November 19, 2018
Dan O Keefe, Ph.D. Ottawa County Water Quality Forum November 19, 2018 Sea Grant Communication Products YouTube Channel Fish Notes enewsletter MSU Extension News Fact sheets and brochures Reports and white
More informationImpacts of Aquatic Invasive Species on the Lake Superior Fishery. by Jeff Gunderson Minnesota Sea Grant Program
Impacts of Aquatic Invasive Species on the Lake Superior Fishery by Jeff Gunderson Minnesota Sea Grant Program Can humans really impact the fishery of such a large waterbody? Lake Superior Fishery Change
More informationLambda Review Workshop Completion Report
Lambda Review Workshop Completion Report Presented by the Standing Technical Committee to the Lake Erie Committee 03/07/2007 Introduction The Lake Erie Committee (LEC) is an international committee consisting
More informationOFFSHORE PREDATORS AND THEIR FISH COMMUNITY
OFFSHORE PREDATORS AND THEIR FISH COMMUNITY James R. Bence Department of Fisheries and Wildlife Michigan State University East Lansing, MI, 48824, U.S.A. James E. Johnson and Ji He Michigan Department
More informationLake Michigan Fisheries Management Plan
Lake Michigan Fisheries Management Plan (Draft) Introduction The Great Lakes represent the largest freshwater ecosystem in the world by surface area and second by volume. Freshwater ecosystems like the
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Project No.: F-81-R-3 Study No.: 491 Title: Evaluation of lake sturgeon Acipenser fulvescens populations in the St. Clair River and Lake St. Clair Period Covered:
More informationOcean and Plume Science Management Uncertainties, Questions and Potential Actions (Work Group draft 11/27/13)
Ocean and Plume Science Management Uncertainties, Questions and Potential Actions (Work Group draft 11/27/13) (The work group thinks the following four questions should form a logic path, but that logic
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Project No.: F-80-R-5 Study No.: 230703 Title: Lakewide assessment of the contribution of natural recruitment to the chinook salmon population of Lake Huron. Period
More informationStatus of Yellow Perch in Lake Michigan and Yellow Perch Task Group Progress Report
Status of Yellow Perch in Lake Michigan and Yellow Perch Task Group Progress Report Wisconsin Department of Natural Resources divers preparing to board the R/V Gaylord Nelson, after completing yellow perch
More informationAssessment Summary Report Gulf of Mexico Red Snapper SEDAR 7
Assessment Summary Report Gulf of Mexico Red Snapper SEDAR 7 Stock Distribution: Red snapper are found throughout the Gulf of Mexico, the Caribbean Sea, and from the U.S. Atlantic Coast to northern South
More informationStatus of Yellow Perch in Lake Michigan
Status of Yellow Perch in Lake Michigan 2016 2017 [Wisconsin DNR biologist Pradeep Hirethota with a nice Lake Michigan perch. This report is published in memory of Pradeep who passed away in December 2017.
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Project No.: F-81-R-1 Study No.: 465 Title: Assessment of lake whitefish populations in Michigan waters of Lake Superior Period Covered: October 1, 1999 to September
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Study No.: 427 Project No.: F-81-R-2 Title: Measurement of sportfishing harvest in lakes Michigan, Huron, Erie, and Superior Period Covered: October 1, 2000 to
More informationStatus of the Lake Erie Fish Community Jeff Tyson, Ohio Division of Wildlife
Status of the Lake Erie Fish Community 2010 Jeff Tyson, Ohio Division of Wildlife Status of the Lake Erie Fish Community 2010 Physical Environment/Fish Community West to east gradient in depth, temperature,
More informationREFE;ENCE. LIBRARY I ~'iilr~~l\1~1\~11111~ ~111lli11~r. Cl LEGISLATl~E I,
Cl LEGISLATl~E REFE;ENCE. LIBRARY I ~'iilr~~l\1~1\~11111~1111111~111lli11~r 11 3 37 62 263 I, SH 348.. J 6 6 1997 This document is made available electronically by the Legislative Reference Library as
More informationMICHIGAN AQUACULTURE AND COMMERCIAL FISHERIES ISSUES
MICHIGAN AQUACULTURE AND COMMERCIAL FISHERIES ISSUES Ron Kinnunen Michigan Sea Grant College Program Michigan capable of $1 billion from aquaculture Flow-through RAS Net-pens US Trends US Seafood Trade
More informationUncertainty and Fishery Management in the North American Great Lakes: Lessons from Applications of Decision Analysis
American Fisheries Society Symposium 70, 2009 2009 by the American Fisheries Society Uncertainty and Fishery Management in the North American Great Lakes: Lessons from Applications of Decision Analysis
More informationMass Marking and Management of Great Lakes Fisheries
Mass Marking and Management of Great Lakes Fisheries T. Newcomb and K. Smith Michigan Department of Natural Resources M. Staggs Wisconsin Department of Natural Resources D. Stang New York Department of
More informationGREAT LAKES FISHERY COMMISSION Project Completion Report 1
GREAT LAKES FISHERY COMMISSION 2009 Project Completion Report 1 A Model Based Evaluation of How Stocking Oncorhynchus Influences the Fish Communities of Lakes Huron and Ontario by: Travis O. Brenden 2
More information9.4.5 Advice September Widely distributed and migratory stocks Herring in the Northeast Atlantic (Norwegian spring-spawning herring)
9.4.5 Advice September 212 ECOREGION STOCK Widely distributed and migratory stocks Herring in the Northeast Atlantic (Norwegian spring-spawning herring) Advice for 213 ICES advises on the basis of the
More informationMichigan Department of Natural Resource Fisheries Division
Michigan Department of Natural Resource Fisheries Division Managing Chinook Salmon in Lake Huron Current Findings and Proposed Management Options July 2011 SUMMARY OF FINDINGS: The Lake Huron food web
More informationFish Conservation and Management
Fish Conservation and Management CONS 486 Managing biotic communities Gardening, poisoning, and shocking what would PETA think? Chapter 10 Ross Managing biotic communities Topics Organism additions Organism
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Project No.: F-53-R-14 Study No.: 486 Title: Assessment of lake trout populations in Michigan s waters of Lake Michigan. Period Covered: April 1, 1997 to March
More informationZooplankton Availability to. Larval Walleye (Sander vitreus) in Black Lake, MI, USA
Zooplankton Availability to Larval Walleye (Sander vitreus) in Black Lake, MI, USA Dana Jo DePlonty School of Biological Science Dr. Kristi Arend 1 Abstract Black Lake has very few small walleye even though
More informationDauphin Lake Fishery. Status of Walleye Stocks and Conservation Measures
Dauphin Lake Fishery Status of Walleye Stocks and Conservation Measures Date: December, 21 Dauphin Lake Fishery Status of Walleye Stocks and Conservation Measures Background: Walleye stocks in Dauphin
More informationSummary of 2012 DNR and Partners Fisheries Surveys in St. Clair/Lake Erie and Fishery Forecast for 2013
Summary of 2012 DNR and Partners Fisheries Surveys in St. Clair/Lake Erie and Fishery Forecast for 2013 LE/LSC Citizens Fishery Advisory Committee April 2, 2013 Michael Thomas Fisheries Research Biologist
More informationGREAT LAKES FISHERY COMMISSION Project Completion Report 1
GREAT LAKES FISHERY COMMISSION 2014 Project Completion Report 1 Feasibility of holding wild-caught Lake Whitefish and Sea Lamprey for parasite-host interaction studies by: David Caroffino 2, Ted Treska
More informationBelow you will find 4 different student projects that combine fisheries science and marine ecology in various ways
Below you will find 4 different student projects that combine fisheries science and marine ecology in various ways PROJECT #1: How much forage fish do fisheries need to leave in the sea to support ecosystem
More informationHighlights of Native Fish Rehabilitation Activities in the Great Lakes. Presented By: Arunas Liskauskas, Ontario Ministry of Natural Resources
Highlights of Native Fish Rehabilitation Activities in the Great Lakes Presented By: Arunas Liskauskas, Ontario Ministry of Natural Resources In this presentation Focus on activities from 2002 to 2007
More informationSTUDY PERFORMANCE REPORT
STUDY PERFORMANCE REPORT State: Michigan Project No.: F-80-R-7 Study No.: 230654 Title: Evaluation of brown trout and steelhead competitive interactions in Hunt Creek, Michigan. Period Covered: October
More information2014 Winnebago System Walleye Report
1986 1988 199 1992 1994 1996 1998 2 22 24 26 28 21 212 214 Number of YOY WAE / Trawl 214 Winnebago System Walleye Report Adam Nickel, Winnebago Gamefish Biologist, 18 March 215 The spring rush of 215 will
More informationNon-indigenous Fish Management Information Fisheries Division 2005
Non-indigenous Fish Management Information Fisheries Division 2005 Richard O Neal Muskegon State Game Area and David Clapp Charlevoix Fisheries Research Station There are presently 209 known, non-indigenous
More informationSalmonid Community of Lake Michigan: 2017 Fall Harbor Assessment
Illinois Department of Natural Resources Division of Fisheries Salmonid Community of Lake Michigan: 2017 Fall Harbor Assessment Steven R. Robillard Illinois Department of Natural Resources - Lake Michigan
More informationGeology. Key Factors. Overfishing. Great Lakes Fishes. Historical Fishing. About 10,000 years since last glacial retreat very young ecologically
Great Lakes Fishes Geology About 10,000 years since last glacial retreat very young ecologically Largest surface freshwater system on earth 21% of world s supply 84% of North America s supply Five unique
More informationStatus of Yellow Perch in Lake Michigan and Yellow Perch Task Group Progress Report
Lake Michigan Committee Ann Arbor, Michigan March 22-23, 2 Status of Yellow Perch in Lake Michigan and Yellow Perch Task Group Progress Report CPUE (number per 35m per night) 25 2 15 1 5 1976 1978 198
More informationStatus of Yellow Perch in Lake Michigan and Yellow Perch Task Group Progress Report
Lake Michigan Committee Duluth, Minnesota March 21-22, 22 Status of Yellow Perch in Lake Michigan and Yellow Perch Task Group Progress Report Photo courtesy of The Hunting and Fishing Library REPORT OF
More informationSalmon, trout, burbot. Piscivores. Alewife Rainbow smelt Deepwater sculpin, slimy sculpin, round goby. Ninespine stickleback. Bloater.
Michigan DNR Salmon, trout, burbot Piscivores Alewife Rainbow smelt Deepwater sculpin, slimy sculpin, round goby Bloater Ninespine stickleback Prey fishes Bottom-up regulation? Salmon/trout Prey fish Inverts
More informationDuring the mid-to-late 1980s
The 2001 Yellow Perch Report by Rick Kubb During the mid-to-late 1980s the yellow perch popula tions in Lake Erie were among the highest on record. Limit catches by fishermen were extremely common during
More informationCharter Boat Fishing in Lake Michigan: 2017 Illinois Reported Harvest
Illinois Department of Natural Resources Division of Fisheries Charter Boat Fishing in Lake Michigan: 2017 Illinois Reported Harvest Steven R. Robillard Illinois Department of Natural Resources Lake Michigan
More informationA REVIEW AND EVALUATION OF NATURAL MORTALITY FOR THE ASSESSMENT AND MANAGEMENT OF YELLOWFIN TUNA IN THE EASTERN PACIFIC OCEAN
A REVIEW AND EVALUATION OF NATURAL MORTALITY FOR THE ASSESSMENT AND MANAGEMENT OF YELLOWFIN TUNA IN THE EASTERN PACIFIC OCEAN Mark N. Maunder and Alex Aires-da-Silva Outline YFT history Methods to estimate
More informationCold-transitional Stream
Cold-transitional Stream A Brief Ecological Description of this Michigan River Type Cold-transitional Stream segments are defined (by the Michigan Department of Natural Resources, Fisheries Division) as
More informationPaper prepared by the Secretariat
COMMISSION FOURTEENTH REGULAR SESSION Manila, Philippines 3 7 December 2017 REFERENCE DOCUMENT FOR REVIEW OF CMM 2005-03 AND FOR THE DEVELOPMENT OF HARVEST STRATEGIES UNDER CMM 2014-06 North Pacific Albacore
More informationSpurdog (Squalus acanthias) in the Northeast Atlantic
ICES Advice on fishing opportunities, catch, and effort Northeast Atlantic Published 11 October 2016 9.3.17 Spurdog (Squalus acanthias) in the Northeast Atlantic ICES stock advice ICES advises that when
More informationTOP:011.6B/US U.S. Fish and Wildlife Service TECHNICAL OPERATING PROCEDURE
TOP:011.6B/US February 1, 2016 U.S. Fish and Wildlife Service Marquette Biological Station 3090 Wright Street Marquette, Michigan 49855 U.S.A. and U.S. Fish and Wildlife Service Ludington Biological Station
More informationNorth East Atlantic Fisheries Baltic Sprat Whitepaper March 2011
North East Atlantic Fisheries Baltic Sprat Whitepaper March 2011 1. Introduction Sprat is a clupeid fish found widely in the North East Atlantic area. Sprat is a relatively short-lived species. The stock
More informationChanges in Mottled Sculpin and Johnny Darter Trawl Catches after. the Appearance of Round Gobies in the Indiana Waters of Lake.
1 Changes in Mottled Sculpin and Johnny Darter Trawl Catches after the Appearance of Round Gobies in the Indiana Waters of Lake Michigan THOMAS E. LAUER, PAUL J. ALLEN, AND THOMAS S. MCCOMISH Aquatic Biology
More informationCurrent projects for Fisheries Research Unit of Minnesota Department of Natural Resources
Current projects for Fisheries Research Unit of Minnesota Department of Natural Resources MAJOR RESOURCE ISSUES IN THE DIVISION OF FISHERIES Status of Fish Populations To effectively manage fish populations,
More informationLife Beyond the Spawning Grounds: Distribution & Food Web Relations of Herring & Forage Fishes in Puget Sound
Life Beyond the Spawning Grounds: Distribution & Food Web Relations of Herring & Forage Fishes in Puget Sound Dave Beauchamp, USGS & UW-SAFS Liz Duffy, UW-SAFS (NRDC) Iris Kemp, UW-SAFS Collaborators:
More informationSTOCK STATUS OF SOUTHERN BLUEFIN TUNA
7 th Expert Consultation on Indian Ocean Tunas, Victoria, Seychelles, 9-14 November, 1998 STOCK STATUS OF SOUTHERN BLUEFIN TUNA Tsuji, S. 1 Introduction The Commission for the Conservation of Southern
More informationLaurentian Great Lakes and their invasive species. Jeff Gunderson Minnesota Sea Grant College Program
Laurentian Great Lakes and their invasive species Jeff Gunderson Minnesota Sea Grant College Program Largest Group of Freshwater Lakes in the World Contain 21% of the worlds surface freshwater Variety
More informationIntegrated Pest Management: Application in the Sea Lamprey Control Program
Integrated Pest Management: Application in the Sea Lamprey Control Program Jill Wingfield Communications Program Manager, Great Lakes Fishery Commission Prepared for: Case Studies in Integrated Pest Management
More informationPelagic fishery for Sebastes mentella in the Irminger Sea
3.2.6.d Pelagic fishery for Sebastes mentella in the Irminger Sea The stock structure of deep-sea redfish S. mentella in Sub-area XII, Division Va and Sub-area XIV and NAFO Div. 1F remains generally uncertain.
More informationConservation Limits and Management Targets
Conservation Limits and Management Targets Setting conservation limits The use of conservation limits (CLs) in England and Wales (E&W) has developed in line with the requirement of ICES and NASCO to set
More informationClimate Change Impacts on Great Lakes Fishes
Climate Change Impacts on Great Lakes Fishes Stuart A. Ludsin ludsin.1@osu.edu Changing Climate Webinar Series The Ohio State University 19 April 2011 Today s Presentation Great Lakes Fish Community A
More informationNOAA s Role in Chesapeake Bay
NOAA s Role in Chesapeake Bay NOAA Chesapeake Bay Office Mission To understand, predict and explain changes in the Chesapeake Bay ecosystem, and to coordinate efforts to conserve and manage coastal and
More informationRelative Weight of Brown Trout and Lake Trout in Blue Mesa Reservoir, Colorado
Relative Weight of Brown Trout and Lake Trout in Blue Mesa Reservoir, Colorado Jessica Abbott U.S. Air Force Academy 2354 Fairchild Drive, USAF Academy, CO 80840, USA Kerri Schmidt U.S. Air Force Academy
More informationLAKE DIANE Hillsdale County (T8-9S, R3W, Sections 34, 3, 4) Surveyed May Jeffrey J. Braunscheidel
Michigan Department of Natural Resources Status of the Fishery Resource Report No. 2003-4, 2003 LAKE DIANE Hillsdale County (T8-9S, R3W, Sections 34, 3, 4) Surveyed May 2001 Jeffrey J. Braunscheidel Environment
More informationOverview 10/8/2015. October Pelagic Advice Pelagic AC 7 October 2015
October Pelagic Advice Pelagic AC 7 October 2015 John Simmonds ICES ACOM Vice Chair Overview WG 1 Blue whiting NSS herring North Sea horse makerel WG 2 Stocks Northeast Atlantic mackerel Western horse
More informationProposed 2018 Fisheries Management Measures to Support Recovery of Interior Fraser River Steelhead
Proposed 2018 Fisheries Management Measures to Support Recovery of Interior Fraser River Steelhead 22-March-2018 Spawning escapements of two Interior Fraser River steelhead stocks, Thompson and Chilcotin
More informationCurrent Status and Management Recommendations for the Fishery in the Cloverleaf Chain of Lakes
Current Status and Management Recommendations for the Fishery in the Cloverleaf Chain of Lakes Jason Breeggemann Senior Fisheries Biologist Wisconsin Department of Natural Resources Outline DNR fisheries
More informationCOMMISSIONERS. March 2010
The Great Lakes Fishery Commission was established by the Convention on Great Lakes Fisheries between Canada and the United States, which was ratified on October 11, 1955. It was organized in April 1956
More informationFall Walleye Index Netting at Battle Lake, Alberta, 2012
Fall Walleye Index Netting at Battle Lake, Fisheries Management Red Deer Area February 28, 213 Fall Walleye Index Netting at Battle Lake, Fisheries Biologist(s): Jason Cooper, Kelly Dick Fisheries Management,
More information"Recommended Improvements for the Next Pacific Salmon Treaty"
"Recommended Improvements for the Next Pacific Salmon Treaty" Randall M. Peterman School of Resource and Environmental Management Simon Fraser University Burnaby, British Columbia, Canada Web site: http://www.rem.sfu.ca/fishgrp/
More informationForage indicators and consumption profiles for Chesapeake Bay fishes
Forage indicators and consumption profiles for Chesapeake Bay fishes Andre Buchheister Ed Houde Carlos Lozano Presentation to Fisheries GIT Dec 14, 2015 Outline Background & Objectives Result Highlights
More informationCharter Boat Fishing in Lake Michigan: 2015 Illinois Reported Harvest
Illinois Department of Natural Resources Division of Fisheries Charter Boat Fishing in Lake Michigan: 2015 Illinois Reported Harvest Steven R. Robillard Illinois Department of Natural Resources Lake Michigan
More informationSTUDY PERFORMANCE REPORT
TUDY PERFORMACE REPORT tate: Michigan Project o.: F-81-R-6 tudy o.: 23495 Title: Assessment of lake trout populations in Michigan waters of Lake uperior Period Covered: October 1, 24 to eptember 3, 25
More informationDevelopments in managing small pelagic fisheries
Developments in managing small pelagic fisheries Prof Ray Hilborn Your essential event for networking and information Impacts of fishing forage fish on their predators: Progress report October 2017 Ray
More informationPreliminary analysis of yellowfin tuna catch, effort, size and tagging data using an integrated age-structured model
Preliminary analysis of yellowfin tuna catch, effort, size and tagging data using an integrated age-structured model Introduction John Hampton Secretariat of the Pacific Community Noumea, New Caledonia
More informationPopulation Dynamics of the St. Marys River Fish Community
Population Dynamics of the St. Marys River Fish Community 1975-2002 David G. Fielder 1 Michigan Department of Natural Resources Alpena Fisheries Research Station 160 E. Fletcher Alpena, MI 49707 David
More informationOkanagan Sockeye Reintroduction
Okanagan Sockeye Reintroduction Backgrounder Elders accounts, and other forms of Traditional Ecological Knowledge (TEK) tell us that many species of salmon once came into the Okanagan Valley and tell us
More informationPredicting skipjack tuna dynamics and effects of climate change using SEAPODYM with fishing and tagging data
Predicting skipjack tuna dynamics and effects of climate change using SEAPODYM with fishing and tagging data Working Doc.: WCPFC-SC12-2016/EB WP01 Inna Senina 1 Patrick Lehodey 1 Beatriz Calmettes 1 Simon
More informationMichael Tehan, Assistant Regional Administrator, Interior Columbia Basin Office
UNITED STATES DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration NATIONAL MARINE FISHERIES SERVICE Northwest Fisheries Science Center Fish Ecology Division 2725 Montlake Boulevard East
More informationCold Small River. A Brief Ecological Description of this Michigan River Type
Cold Small River A Brief Ecological Description of this Michigan River Type Cold Small River segments are defined (by the Michigan Department of Natural Resources, Fisheries Division) as typically having
More informationApplication of a New Method for Monitoring Lake Trout Abundance in Yukon: Summer Profundal Index Netting (SPIN)
Application of a New Method for Monitoring Lake Trout Abundance in Yukon: Summer Profundal Index Netting (SPIN) Prepared by: Lars Jessup Nathan Millar November 2011 Application of a New Method for Monitoring
More informationCedar Lake Comprehensive Survey Report Steve Hogler and Steve Surendonk WDNR-Mishicot
Cedar Lake- 2006 Comprehensive Survey Report Steve Hogler and Steve Surendonk WDNR-Mishicot ABSTRACT Cedar Lake is a 142 acre lake located in the southwest corner of Manitowoc County. It is a seepage lake
More informationAtlantic croaker, Micropogonias undulatus (Linnaeus, 1766)
Atlantic croaker, Micropogonias undulatus (Linnaeus, 1766) Although Atlantic croaker occur throughout much of Florida, they are seldom found south of Tampa Bay on the gulf coast or south of the Indian
More informationIn each summer issue of Lake
The 2000 Lake Erie Walleye Report by Rick Kubb In each summer issue of Lake Erie Walleye Magazine, we provide a synopsis of the walleye fishery in Lake Erie based on the scientific reports produced by
More informationCOMPILED REPORTS TO THE GREAT LAKES FISHERY COMMISSION OF THE ANNUAL BOTTOM TRAWL AND ACOUSTICS SURVEYS FOR 2016
COMPILED REPORTS TO THE GREAT LAKES FISHERY COMMISSION OF THE ANNUAL BOTTOM TRAWL AND ACOUSTICS SURVEYS FOR 216 217 PREPARED BY THE U.S. GEOLOGICAL SURVEY, GREAT LAKE SCIENCE CENTER Suggested Citation
More informationEU request to ICES on in-year advice on haddock (Melanogrammus aeglefinus) in Division 7.a (Irish Sea)
ICES Special Request Advice Celtic Seas Ecoregion Published 1 March 2017 EU request to ICES on in-year advice on haddock (Melanogrammus aeglefinus) in Division 7.a (Irish Sea) Advice summary Please note:
More informationForage Fish in Chesapeake Bay: Status, Trends, Science and Monitoring
Forage Fish in Chesapeake Bay: Status, Trends, Science and Monitoring GIT Meeting Chesapeake Biological Lab Solomons, MD 4 December 2013 Chesapeake Bay Watershed Agreement, Draft 11/3/13 Forage Fish Outcome:
More informationmake people aware of the department s actions for improving the deer population monitoring system,
Investing in Wisconsin s Whitetails 1 Over the last 60 years, the department has developed a deer herd monitoring and management system that seeks to use the best science and data possible. The deer monitoring
More informationForage Fish Outcome Management Strategy , v.1
Management Strategy 2015 2025, v.1 I. Introduction Photo credit: Virginia Institute of Marine Science. Bay anchovy (Anchoa mitchilli). Forage species are an important component of the food web linking
More informationLake whitefish, Rainbow smelt, Walleye, Yellow perch. Image New York State Department of Environmental Conservation. Lake Erie
Lake whitefish, Rainbow smelt, Walleye, Yellow perch Image New York State Department of Environmental Conservation Lake Erie Bottom gillnet, Trap net, Midwater trawl November 24, 2014 Whitney Conard, Consulting
More informationISC Pacific Bluefin tuna Stock Assessment 2016
ISC Pacific Bluefin tuna Stock Assessment 2016 Completed in 2016-Feb. 29 th to 2016-Apr. 12 th at La Jolla, USA ISC Pacific Bluefin tuna Working Group 2016/5/10 San Diego Marriott La Jolla -IATTC SAC 07-
More informationPlaice (Pleuronectes platessa) in Division 7.e (western English Channel)
Celtic Seas and Greater North Sea ecoregions Published 30 June 2016 Version 2: 15 May 2017 5.3.51 Plaice (Pleuronectes platessa) in Division 7.e (western English Channel) ICES stock advice ICES advises
More informationAgenda and minutes. Minnesota 1837 Ceded Territory Fisheries Committee January 17, 2018, 10:00 a.m. WebEx
Agenda and minutes Minnesota 1837 Ceded Territory Fisheries Committee January 17, 2018, 10:00 a.m. WebEx 1. Introductions 2. Review and approve agenda (Action) Agenda was approved 3. Distribute past meeting
More informationFish Community and Aquatic Ecosystem Responses to the Cessation of Eurasian Watermilfoil Chemical Treatment on Lake Ellwood, Wisconsin
Fish Community and Aquatic Ecosystem Responses to the Cessation of Eurasian Watermilfoil Chemical Treatment on Lake Ellwood, Wisconsin Greg G. Sass Wisconsin Department of Natural Resources Fisheries and
More information2015 Winnebago System Walleye Report
215 Winnebago System Walleye Report Adam Nickel, Winnebago Gamefish Biologist, March 216 As winter passes in the rear view mirror, it won t be long until the spring rush of the 216 walleye run is here.
More informationWhy has the cod stock recovered in the North Sea?
Why has the cod stock recovered in the North Sea? Summary The expansion of European fisheries during the 1970s and 1980s resulted in high fishing pressure on stocks of cod, haddock, whiting and saithe
More informationAgenda Item B.1.b Open Public Comment 3 April 2015
Agenda Item B.1.b Open Public Comment 3 April 2015 March 20, 2015 Ms. Dorothy Lowman, Chair Pacific Fishery Management Council 7700 NE Ambassador Place, Suite 101 Portland, OR 97220 Mr. Will Stelle Administrator,
More information